Beta-carotene is a nutrient found in fruits and vegetables, particularly carrots, and is important for vitamin A deficiency. It has antioxidant properties and may have anti-cancer effects. It is best consumed in its natural state and supplements may be harmful for some people, particularly smokers. A healthy diet is the best way to obtain beta-carotene, but supplements may be recommended for certain patients with a vitamin A deficiency.
Beta-carotene is a carotenoid substance found naturally in plants and serves as an accessory for photosynthesis. It is primarily responsible for the pigment in orange colored fruits and vegetables, but also contributes to the pigment in red, yellow and green colored fruits and vegetables. Although some food sources are rich in beta-carotene, such as cantaloupe, broccoli, spinach, and palm oil, carrots are the main supplier of this substance in most people’s diets.
Beta-carotene is accepted as an essential human nutrient, especially when there is a vitamin A deficiency. In fact, when vitamin A deficiency is suspected, blood tests that measure levels of this substance are often done. Beta-carotene is believed to have antioxidant properties in addition to its provitamin A function. Some studies have also concluded that it may have a positive impact on the immune system, as well as anti-cancer effects.
Most official nutrition and health organizations, including the National Cancer Society, recommend consuming five servings of fruits and vegetables per day. A sufficient amount of beta carotene would be absorbed following these guidelines. However, recent research has indicated that this substance may only be beneficial when consumed in its natural state, such as in fruits and vegetables, rather than in supplemental form. Also, it could be harmful for some people to take beta-carotene supplements. Clinical trials have shown that supplements can increase the rate of lung cancer in smokers.
Like most other nutritional substances, beta-carotene can be obtained in adequate amounts by eating a healthy, balanced diet that includes fruits and vegetables. However, a doctor may recommend supplements for certain patients. Indicators of a vitamin A deficiency include vision problems, dry or inflamed eyes, unexplained hair loss or rash, and recurrent infections. Before considering any nutritional supplement, you should consult your doctor.
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